X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fio%2FRememberingInputStream.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fio%2FRememberingInputStream.java;h=ac2e5f050cf2a0e127ada2d6ee931001a247729a;hb=73e0a751b87b2edbde70babe2e2578e139ba7ff8;hp=0000000000000000000000000000000000000000;hpb=ef136195e508933d207ba9bd0899a942273aba73;p=sonitus.git
diff --git a/src/main/java/net/pterodactylus/sonitus/io/RememberingInputStream.java b/src/main/java/net/pterodactylus/sonitus/io/RememberingInputStream.java
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+++ b/src/main/java/net/pterodactylus/sonitus/io/RememberingInputStream.java
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+/*
+ * Sonitus - RememberingInputStream.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+package net.pterodactylus.sonitus.io;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Wrapper around an {@link InputStream} that remembers all bytes that have been
+ * read from the wrapped input stream. The remembered bytes can be retrieved
+ * from this stream as another input stream, suitable for use with {@link
+ * java.io.SequenceInputStream}.
+ *
+ * @author David âBombeâ Roden
+ */
+public class RememberingInputStream extends FilterInputStream {
+
+ /** The buffer for the read bytes. */
+ private final ByteArrayOutputStream rememberBuffer = new ByteArrayOutputStream();
+
+ /**
+ * Creates a new remembering input stream.
+ *
+ * @param inputStream
+ * The input stream to remember
+ */
+ public RememberingInputStream(InputStream inputStream) {
+ super(inputStream);
+ }
+
+ //
+ // ACCESSORS
+ //
+
+ /**
+ * Returns all remembered bytes as an {@link InputStream}.
+ *
+ * @return All remembered bytes
+ */
+ public InputStream remembered() {
+ return new ByteArrayInputStream(rememberBuffer.toByteArray());
+ }
+
+ //
+ // INPUTSTREAM METHODS
+ //
+
+ @Override
+ public boolean markSupported() {
+ return false;
+ }
+
+ @Override
+ public int read() throws IOException {
+ int read = super.read();
+ if (read != -1) {
+ rememberBuffer.write(read);
+ }
+ return read;
+ }
+
+ @Override
+ public int read(byte[] bytes) throws IOException {
+ int read = super.read(bytes);
+ if (read != -1) {
+ rememberBuffer.write(bytes, 0, read);
+ }
+ return read;
+ }
+
+ @Override
+ public int read(byte[] bytes, int offset, int length) throws IOException {
+ int read = super.read(bytes, offset, length);
+ if (read != -1) {
+ rememberBuffer.write(bytes, offset, read);
+ }
+ return read;
+ }
+
+ @Override
+ public synchronized void reset() throws IOException {
+ throw new IOException("mark()/reset() not supported");
+ }
+
+ /**
+ * {@inheritDoc}
This method disallows seeking and always returns {@code
+ * 0}.
+ */
+ @Override
+ public long skip(long l) throws IOException {
+ return 0;
+ }
+
+}